I can think of two instances in which it could be said I was "riled up on the internet", one of which is very recent. However, in both cases it wasn't really a case of me being "riled up on the internet" so much as getting into an argument with one of my friends, and they're goddamn lucky that it was online because if anyone ever spoke to me irl they way that they did online in those instances, we probably wouldn't be friends anymore.